Female protestor who kissed riot policeman's helmet charged with sexual assault

What elements do you have in the italian case, and lacking in the egyptian one, that makes you certain that there is assault in the first case ?
(the same lady, kissing another cop’s helmet : http://static.guim.co.uk/sys-images/Guardian/About/General/2011/1/28/1296235341346/An-Egyptian-anti-governme-007.jpg )

And suppose the lady in the egyptian picture was very angry to see young men doing this awful job and obeying to terrible orders, and that her spontaneous reaction, a mix of anger and despair was to go and kiss the cop, who had to endure this passively ? Then, in that extremely hypothetical case, that would be assault, and she should have been tried accordingly, or not ?